Tractor for agricultural implements and the like.



M. J. BUSHONG. TRACTOR FOR AGRICULTURAL IMPLEMENTS AND THE LIKE.

APPLICATION FILED JUNE 8, 1911.

2 SHEETS-SHEBT l.

Patented Dec.31, 1912.

lm/humans M. J. BUS-HUNG. TBAOTOB FOR AGRIOUL IUBALIMPLEMENTS AND THELIKE. APPLIOATIGNJIIJED JUNE 8, 1911. 1,043,940, Patented 10130.31,1912.

2 SHEETS-SHEET 2.

MAHLON J. BUSH ONG, OF MANASSAS, VIRGINIA.

TRACTOR FOR AGRICULTURAL IMPLEMENTS AND THE LIKE.

Specification of Letters Patent.

Patented Dec. 31,1912.

8 Application filed June 8, 1911. Serial No. 632,057.

To all whom it may concern:

Be it known that I, MAHLON J. BUSHONG, a citizen of the United States ofAmerica, residing at Manassas, in the county of Prince William and Stateof Virginia, have invented certain new and useful Improvements inTractors for Agricultural Implements and the Like, of which thefollowing is a specification.

The present invention has reference to tractors for agriculturalimplements and the like, and more especially to tractors of the twowheel type, wherein the entire tractor is turned bodily by the samepower that propels it in order to effect the steering of the vehicle.

It comprehends, essentially certain improvements, hereinafter describedat length, in. or relating to the driving connections between the motorand the mechanismfor producing the requisite swinging movement of theframe or body of the vehicle, the con struction and arrangements of thevarious parts or elements included in the aforesaid driving connectionsbeing such as to insure a maximum strength, durability and efficiencyand a certainty of action.

A structural embodiment of the invention is illustrated in theaccompanying drawings which form a part of this application, whereof;

Figure 1 is a top plan view of the improved tractor; Fig. 2 is alongitudinal vertical sectional view, taken on the line 2-2 of Fig. 1,and Fig. 3 is a perspective view showlng the mountlng of the reversinglever and safety device.

In said drawings, 1 designates generally the frame. 2 the motor and 3the axle of the vehicle, the element last referred to being journaled insuitable bearings 4t mounted upon the sills of the frame and carryingupon its ends the traction wheels 5, which latter, are provided withsprockets 6 secured thereto in any desired manner and connected bydriving chains 7 with smaller sprockets 8 fast upon the ends of thedifferential shaft 9. Said shaft ,9" is journaled in bearing brackets 10attached to the front ends of the sill frame and the differential 11which it carries is driven from the motor 2-by means '33 provided at itsends with worms 3 1 of a chain 12 that connects the sprockets 13 and 14,the former of these sprockets being secured to the differential itself,and the latter to the motor shaft 15. The motor is mounted uponaplatform 1O on frame 1, and may consist of either an oil or gasoleneengine of any conventional or suitable make.

In advance of the platform is located a cross-beam 17 secured at itsends to the frame sills and having pivoted to its central portion thefront end of the draft beam 18. The latter beam is arrangedlongitudinally of frame 1, as will beunderstood and its rear portionextends through a longitudinal slot 19 formed in the rear frame sill andis provided with an anti-friction roller 20 mounted in a seat or opening21 and adaptedto engage the upper and lower walls of slot 19. Beam 18 isdesignedto he held in a substantially stationary position during thesteering of the vehicle, the frame of the latter moving relativelythereto at such times.

To effect the movements of the frame just referred to the inner faces ofthe side sills of said frame are equipped with a pair of longitudinallyarranged horizontal shafts 22 and 23 supported in brackets 24 secured tosaid faces. These shafts are respectively provided at their rear endswith drums 25 and 26 and at their front ends with worm wheels 27 and 28,as shown in Fig. 1. Drums 25 and 26 are connected respectively to thedraft beam 18 by cables 29 and 30 or similar flexible elements, whichare fastened thereto at one end and attached at the other end to eyesand 32 secured to the beam, said cables being trained over thecorresponding drums in opposite directions so that one will unwind whenthe other is wound up.

The requisite synchronous rotation of shafts 22 and 23 is producedthrough the intermediary of a suitably mounted cross shafs an 35 andintermediate its ends with a paingf oppositely facing bevel gears 36and-3 Worms 34 and 35 are designed to respectively engage and drive theworm wheels 27 and 28 while gears 36 and 37 are designed to beinterchangeably engaged with and driven by a bevel gear 38 ;nounted onthe rear end of a countershaft 39 which is driven from the engine 2 bymeans of intermeshing bevel gears 40 and 41.

Sears 86 and 37 are borne, respectively, by sliding sleeves 42 and 43which are keyed to the cross shaft and are loosely connected to theforked ends 44 of a yoke 45 shifted by a reversing lever 46 that isloosely connected to the central portion of the yoke and is fulcrumedupon the rear wall of the case 47 that ineloses said yoke and the gears36, 37 and 38, said case being mounted upon the forward portion of beam18. The arrangement above described is such, there fore, that movementof lever 46 in one di rection will have the effect of engaging gearsand38 and i consequence of rotating shafts 33, 22 and 28 in onedirection, while movement of said lever in the opposite direction willproduce engagement of gears 37 and 38 with alternate rotation of shafts33, 22 and 23 in the other direction. To prevent excess movement of thereversing lever in either direction there is mounted upon beam 18 anupstanding lJ-shaped bracket i8 the terminals 4-9 of whose legs areextended laterally into the path of movement of said lever so as to formstops.

As shown in Fig. 1 the rear end of the draft beam ext-ends anappreciable distance beyond the adjacent frame member and is providedwith a terminal hook 330 or analogous device by means whereof it may becoupled to the implement, cart or other body (illustration of which isomitted) that is to be propelled or drawn. The attachment of such bodyto the beam end will obviously serve to hold said beam in anapproximately stationary position and therefore, the actuation of thecable mechanism will occasion a swinging movement of the frame, and thetraction wheels relative to said beam, this being due to the fact thatthe power necessary to move the implement or body side wise is greaterthan that required to turn the wheeled frame, so that the points atwhich the traction wheels contact with the ground will form the pivotsupon which said wheels and frame turn.

lhe operation of the invention is believed to be apparent from theforegoing. and it is merely necessary to state therefore, that when itis desired. to turn the tractor the reversing lever is shifted in theproper cirection to produce the requisite rotation of the cable shafts,whereupon one of the cables will be wound upon its drum, while the otheris unwound, and will in consequence draw the adjacent side sill of theframe toward the stationary reach, thus effecting the turning of theframe and the traction wheels.

When the cable mechanism is in motion it will be seen that both of theshafts 22 neaaeeo and 2% rotate simultaneously in the same direction, byreason of this fact tension is exerted at the same time upon bothcables,

and the latter therefore are constantly maintained taut.

The arrangement of the worms 3d and 35 meshing with cog wheels 27 and 28prevent a dragging thus holding the frame in positive position.

Having thus described my invention, what l claim as new is,

1. In a two wheel tractor, the combination with a wheeled frame andengine mounted thereon, and driving connections between the wheel andsaid engine, of a reach pivoted atone end to said frame and adapted forconnection at its other end to the body to be hauled, and mechanism forturning said. frame and said wheels bodily relative to said beamcomprising a pair of drums mounted upon said frame at opposite sides ofthe beam, a pair of flexible ele ments connected at one end to thecorresponding drums and at the other end to said beam, drivingconnections between said engine and said drums for simultaneouslyrotating the latter in the same direction, and reversing mechanismassociated with the last mentioned driving connections.

2. In a two wheel tractor, the combination with a wheeled frame andengine mount- 'ed thereon, and driving connections between the wheel andsaid engine, of a reach pivoted at one end of said frame and adapted forconnection at its other end to the body to be hauled, and mechanism forturning said frame and said wheels bodily relative to said beamcomprising a pair of longitudinal shafts secured to said frame upon opposite sides of the beam, a drum secured'to each shaft, a pair of flexibleelements having their outer ends wound around said drums in oppositedirections and their inner ends connected to said beam, driving meansoperatively connected with the engine for simultaneously rotating saidshafts in the same direction, and reversing mechanism associated withsaid driving means.

3. In a two wheel tractor, the combination with a wheeled frame, anengine mounted thereon, and driving connections between the wheels andsaid engine, of a stationary draft beam pivoted at one end to saidframe, and adapted for connection at its other end to the body to behauled, and mechanism for turning said frame and said wheels bodilyrelative to said beam comprising a pair of drums mounted upon said frameat opposite sides of the beam, a pair of flexible elements connected atone end to the corresponding drums and at the other connected with theengine shaft, a cross shaft driving connection between the ends of saidcrossshaft and said drums, a gear In testimony whereof afix mysignacarried by said counter shaft, a pair of opture in presence of twowltnesses.

poslteiy facing connected gears shdably mounted on said cross shaft andadapted I MAHLON G" for interchangeable engagement with the Witnesses:

first'named gear and a reversing lever re- 'THOS, H. LION,

spectlvely connected with said sliding gear. W. L. DIEHL.

Copies of-this patent may be obtained for five cents each, by addressingthe "Commissioner of Batents,

' Washington, D. G.

